Tieton Dam

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Tieton Dam
Tieton Dam from Lava Point, 2015.jpg
Tieton Dam and Rimrock Lake from Lava Point
Location Yakima County, Washington, USA
Coordinates 46°39′23″N121°7′46″W / 46.65639°N 121.12944°W / 46.65639; -121.12944 Coordinates: 46°39′23″N121°7′46″W / 46.65639°N 121.12944°W / 46.65639; -121.12944
Opening date1925 [1]
Operator(s) United States Bureau of Reclamation [1]
Dam and spillways
Impounds Tieton River
Height319 feet (97 m) [1]
Length920 feet (280 m) [1]
Dam volume2,049,000 cu ft (58,000 m3)
Creates Rimrock Lake
Total capacity203,600 acre feet (0.251 km3) [1]
Active capacity198,000 acre feet (0.244 km3) [1]
Catchment area 184 square miles (477 km2) [1]
Surface area2,674 acres (10.8 km2) [1]

Tieton Dam is an earth and concrete type dam on the Tieton River in Yakima County, in the U.S. state of Washington. The dam began operation in 1925. Its reservoir, Rimrock Lake, has a total capacity of 203,600 acre feet (0.2511 km3) with a normal operating capacity of 198,000 acre feet (0.244 km3) to provides water for agricultural irrigation. [1] This dam is a component of the Yakima Project. [2] Upstream from the dam, the river is impounded by Clear Creek Dam, another element of the Yakima Project. About 8 miles (13 km) downstream from the dam, the Tieton River is tapped for the Tieton Main Canal.

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Tieton River

The Tieton River is a tributary of the Naches River, in Yakima County, Washington in the United States.

Rimrock Lake

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Kachess Lake

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Clear Creek Dam is a dam in Yakima County, Washington.


  1. 1 2 3 4 5 6 7 8 9 Tieton Dam Archived 2011-07-16 at the Wayback Machine , NPDP Dam Directory
  2. {{cite web Tieton Dam also produces electricity for Burbank Water and Power and Glendale Water and Power, near Los Angeles. The Southern California Public Power Agency installed two 7 megawatt generators in a project started in 2010. The power is transmitted over the DC Intertie that runs from Celilo, Oregon to Sylmar, California. <https://burbankwaterandpower.com/images/administrative/downloads/Tieton%20Hydro_Read%20More_Final.pdf> usg=AOvVaw1itRKxZvyxn9zjKa-fqZQ1 | url = http://www.usbr.gov/projects/Project.jsp?proj_Name=Yakima+Project | title = Project details - Yakima Project | author = Bureau of Reclamation | authorlink =Bureau of Reclamation | publisher = | accessdate = 2015-08-18 }}

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